30 ÷ 3 × 2the number of apples left if eight out of the sixteen apples have been sold

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

Yvaries directly as x. y =90 when x=6. find y when x=13